NASCAR gave Sprint Cup teams the basic 2013 rules package for non-restrictor-plate tracks earlier this week as teams prepare for an open test with NASCAR’s new car Tuesday at Charlotte Motor Speedway.

Teams needed the package to get cars ready for the test Tuesday and Wednesday.

"We've told them what splitters and spoilers they'll use," NASCAR Vice President of Competition Robin Pemberton told ESPN.com. "They know what they need for suspensions and stuff like that."

The 2013 cars feature more manufacturer identity with the bodies of the car while the chassis remain the same across the board. Among the rule changes are differences in weight — 160 pounds lighter; 100 pounds on the right side, 60 pounds on the left — as well as adjustments as far as tire camber and rear housing.

Open to all teams, the test next week is expected to attract 14-16 cars as teams continue to develop and build cars while also anticipating more rules changes.